铁磁谐振造成的全厂停电事故解析  

Analysis on Power Supply Interruption Caused by Ferro-resonance in the Th ermal Power Plant

作　　者：宋继孚[1] 吴春旺[2] 王伟[1] 

机构地区：[1]山东省济宁市东郊热电厂,济宁272000 [2]济宁职业技术学院,济宁272037

出　　处：《电气开关》2005年第4期32-34,共3页Electric Switchgear

摘　　要：对某热电厂35kV电气系统发生铁磁谐振,产生谐振过电压,造成35kV电缆头绝缘击穿爆破,最终导致全厂停电事故的原因进行了分析,认为35kV线路未按规定定期清扫、试验,在悬垂绝缘子表面附着较多污秽物等,是造成最终事故的原因。对此,指出了暴露的问题,并给出了防范措施。In this artcle,it has been carried out that cause analysis on power supply interruption is caused by ferro - resonance which causes resonance overvoltage and explosion of 35kV cable socker in a thermal power plant＇s 35kV system. It is considered that the main causes leading to accident are as follow：1）no cleaning and test of 35KV wires; 2） much pollution on suspension insulators. In this connection, exposive problem and corresponding measures have been pointed out.

关 键 词：铁磁谐振 短路故障 变压器 闪络放电 复合电压起动过电流保护 差动保护 故障跳闸 

分 类 号：TM132[电气工程—电工理论与新技术]